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ISL6539CAZ Datasheet(PDF) 8 Page - Intersil Corporation |
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ISL6539CAZ Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 20 page Block Diagram ERROR AMP 1 VSEN1 300k Ω PWM1 + 0.9V ISEN1 140 Ω SAMPLE CURRENT SAMPLE CURRENT PHASE1 PGND1 UGATE1 BOOT1 LGATE1 VCC + 0.9V REFERENCE OCSET1 1/2.9 OCSET1 1/33.1 ISEN1 ERROR AMP 2 ADAPTIVE DEAD-TIME VSEN2 1M Ω 16.7pF 1.25pF 500k Ω 300k Ω PWM2 + 0.9V ISEN2 140 Ω SAMPLE CURRENT SAMPLE CURRENT PHASE2 PGND2 UGATE2 BOOT2 LGATE2 VCC DIODE EMULATION V/I SAMPLE TIMING + 0.9V REFERENCE OCSET2 1/2.9 OCSET2 1/33.1 ISEN2 DDR VIN VCC DUTY CYCLE RAMP GENERATOR PWM CHANNEL PHASE CONTROL OC2 OC1 DDR = 0 DDR = 1 DDR VTT DDR = 0 DDR = 1 8 CLOCK CYCLES SAME STATE FOR REQUIRED TO LATCH OVERCURRENT FAULT 8 CLOCK CYCLES SAME STATE FOR REQUIRED TO LATCH OVERCURRENT FAULT VCC PG1 REFERENCE OV UV PGOOD DDR VREF BUFFER AMP DDR = 1 DDR = 0 1.25pF 500k Ω 1M Ω 16.7pF OV UV PGOOD ADAPTIVE DEAD-TIME DIODE EMULATION V/I SAMPLE TIMING OC1 DDR POR FAULT LATCH BIAS SUPPLIES REFERENCE ENABLE SOFT-START GND EN1 EN2 REF/PG2 SOFT1 SOFT2 DDR MODE CONTROL OC2 REF REF (200k Ω, DDR = 1) 4.4k Ω 4.4k Ω - + - + - + - + - + - + - + - + - + - + DDR EN1 EN2 VIN CH1 CH2 φ 01 1 5V 15.0V 180° 1 1 1 VIN = 5V 90° VIN = GND 0° |
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